Ios NSMetadataQuery在未首先调用stopQuery的情况下被解除分配？

我在运行应用程序时打印此日志消息时遇到问题

<NSMetadataQuery: 0x6000000f1200> is being deallocated without first calling -stopQuery. To avoid race conditions, you should first invoke -stopQuery on the run loop on which -startQuery was called

对于Dealoc

 [self.query disableUpdates];
  [self.query stopQuery];

我可能遗漏了什么有人帮我弄清楚

非常感谢您的帮助

self.query = [[MetadataQuery alloc] init];
        self.query.sortDescriptors = @[[[NSSortDescriptor alloc] initWithKey:(id)kMDItemFSName ascending:YES]];
        self.query.predicate = SearchPredicateForType(type);
        self.query.delegate = self;
        self.query.searchScopes = @[_searchURL.absoluteString];
        self.query.notificationBatchingInterval = 10.0;

        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(metadataQueryDidFinishGathering_Notification:) name:NSMetadataQueryDidFinishGatheringNotification object:self.query];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(metadataQueryDidUpdate_Notification:) name:NSMetadataQueryDidUpdateNotification object:self.query];

 [self.query disableUpdates];
  [self.query stopQuery];

 (void)metadataQueryDidFinishGathering_Notification:(NSNotification *)note {
    NSLog(@"type %@", @(_type));

    NSMetadataQuery *q = note.object;
    if(![q.searchScopes containsObject:_searchURL.absoluteString]) {
        NSLog(@"MISMATCH %@ %@", q.searchScopes, _searchURL);
//        return;
    }

    [q disableUpdates];
    [q stopQuery];

    [self getTotalSizeOfQuery];
}